TM
5-4310-350-14
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Check for air leaks in the piping,
a. Make a solution of soapy water.
b. Apply to the fittings. If a leak is present it will be indicated by the soapy water bubbling.
c. If a leak is found, notify organizational maintenance.
Step. 3. Pressure switch not set properly.
The pressure switch assembly determines cut-in and cut-out pressure for the compressor assembly.
The switch can be adjusted for cut-out pressures over the range of 140 to 175 psi. The switch can
also be adjusted for a 35 to 65 psi differential between cut-in and cut-out pressure. The safety
valve assembly releases when the air receiver pressure exceeds 200 psi.
If the pressure switch is not operating properly, notify Organizational Maintenance.
5. COMPRESSOR RUNNING HOT
Step 1. Check for blockage of air to fan wheel.
Remove any object that is blocking the air passage. Use compressed air to remove any accumula-
tion of dust or dirt.
Step 2. Check oil level
Refer to paragraph 1, step 2 for checking oil level.
Refer to paragraph 1, step 1 to service the intake filter.
6. COMPRESSOR RUNNING SLOW
Check motor terminal board for loose connections.
a. Tighten loose connections.
b. Clean the terminal board with compressed air.
WARNING
3-7. V-Belts
a. Inspection.
Dry cleaning solvent P-D-680. used to
(1) Make a visual inspection of the belts
clean parts is potentially dangerous to
to determine their conditions.
personnel and property. Avoid repeated
(2) If the belts are bad, notify organiza-
and prolonged skin contact. Do not use
tional maintenance.
near open flame or excessive heat. Flash
b. Cleaning.
point of solvent is 100 F. -- 138 F
(38 C. -- 59 C.).
WARNING
c. Cleaning. Clean the belt guard with a rag
Dry cleaning solvent, PD-680, used to
dipped in cleaning solvent, PD680, and dry
clean parts is potentially dangerous to
thoroughly.
personnel and property. Avoid repeated
and prolonged skin contact. Do not use
3-6. Motor
near open flame or excessive heat. Flash
a. Cleaning.
point of solvent is 100 F. -- 138 F
(1) Remove dust and dirt from the motor
(38 C. -- 59 C.).
with compressed air.
(2) Use a rag which has been dampened in
(1) Use a cloth dampened in cleaning solvent,
cleaning solvent, PD680, to wipe off the motor.
PD-680, to remove oil and dust from the belts.
(2) If the belts have become saturated with
b. Inspection.
oil and dirt, notify organizational maintenance.
(1) Inspect the shaft for movement (end
play).
3-8. Air Compressor
(2) Notify organizational maintenance of a
defective motor or shaft.
